O
Classificação estelar

O
Temperatura efetiva
≥ 25,000 K
Raio solar
≥ 6.6 R☉
Massa solar
≥ 16 M☉

Uma estrela de classe O da sequência principal (estrela O V) é uma estrela da sequência principal (classe de luminosidade V) da classe espectral O. Essas estrelas têm entre 15 e 90 vezes a massa solar e temperaturas efetivas entre 30 000 e 52 000 K, o que lhes dá uma coloração azulada. São entre 30 000 e 1 000 000 de vezes mais luminosas que o Sol. Essas estrelas são raras; estima-se que não existem mais que 20 000 em toda Via Láctea. Examplos incluem σ Orionis A e 10 Lacertae.

Uses material from the Wikipedia article "Estrela de classe O da sequência principal", which is released under the Creative Commons BY-SA 3.0.
Corpo celeste DistânciaWiki
AlnitakStar, Double or multiple star, Emission-line Star, Infra-Red source, UV-emission source, Variable Star, X-ray sourceO736[x]
BD+50 2869Star, Emission-line Star, Galaxy, Infra-Red source, Nebulosa planetária, UV-emission source, Variable StarO2000[x]
BD-12 1172Star, centimetric Radio-source, Emission-line Star, Infra-Red source, Nova, Nebulosa planetária, Radio-source, sub-millimetric source, UV-emission source, Variable StarO1100[x]
Eta CarinaeStar, Double or multiple star, Star in double system, Star in Cluster, Emission-line Star, Radiação gama, Infra-Red source, Nova, Radio-source, Supergigante azul, sub-millimetric source, UV-emission source, Variable Star, X-ray sourceO7700[x]
GCRV 4981Star, Emission-line Star, Infra-Red source, Nebulosa planetária, Radio-source, Variable StarO800[x]
HD 218915Star, Infra-Red source, Supergigante azul, Estrela binária, UV-emission sourceO2490[x]
Sigma OrionisStar, Double or multiple star, Star in Cluster, Infra-Red source, Estrela binária, UV-emission source, Variable Star, X-ray sourceO1148[x]
V1357 CygniStar, Star in Association, Estrela Herbig Ae/Be, Buraco negro, Ellipsoidal variable Star, Radiação gama, High Mass X-ray Binary, Infra-Red source, Supergigante azul, Estrela binária, Variable Star, X-ray sourceO7500[x]
Zeta PuppisStar, Variable of BY Dra type, Emission-line Star, Infra-Red source, Pulsating variable Star, Radio-source, UV-emission source, Variable Star, X-ray sourceO1083[x]
10 LacertaeStar, Double or multiple star, Infra-Red source, UV-emission source, Variable Star, X-ray sourceO1726
2MASS J02321086+6133080Star, Star in Association, Star in Cluster, Infra-Red source, Objeto estelar jovemO5982
2MASS J02340253+6123108Star, Star in Association, Star in Cluster, Infra-Red source, Objeto estelar jovemO5969
AlniyatStar, Double or multiple star, Star in Nebula, Variable Star of beta Cep type, Região H II, Infra-Red source, Meio interestelar, Radio-source, Nebulosa de reflexão, Estrela binária, UV-emission source, Variable StarO474
BD+33 1025Star, Star in Association, Star in Cluster, Infra-Red source, Variable Star, X-ray sourceO824
BD+56 556Star, Double or multiple star, Star in Cluster, Infra-Red sourceO7672
CD-24 13785Star, Double or multiple star, Star in Cluster, Infra-Red sourceO4395
CD-41 11037Star, Star in Cluster, Infra-Red source, Estrela binária, Variable Star, X-ray sourceO4049
CD-58 3526Star, Star in Cluster, Infra-Red source, X-ray sourceO8903
Cl Pismis 24 1Star, Double or multiple star, Star in double system, Star in Cluster, Infra-Red source, X-ray sourceO8150
CPD-58 2625Star, Star in Cluster, Infra-Red source, Aglomerado estelar aberto, X-ray sourceO8900
CPD-59 2591Star, Double or multiple star, Star in Cluster, Infra-Red source, Aglomerado estelar aberto, X-ray sourceO8227
CPD-59 2626Star, Star in Cluster, Infra-Red source, Aglomerado estelar aberto, X-ray sourceO8248
CPD-62 2198Star, Star in Cluster, Infra-Red sourceO5895
HD 101333Star, Star in Cluster, Infra-Red source, UV-emission sourceO5850
HD 12993Star, UV-emission source, Variable StarO2435
HD 148937Star, Double or multiple star, Emission-line Star, Emission Object, Galaxy, Região H II, Infra-Red source, Meio interestelar, Nebulosa planetária, Estrela binária, UV-emission source, Variable Star, X-ray sourceO1388
HD 152200Star, Star in Cluster, Infra-Red source, Variable Star, X-ray sourceO4032
HD 152233Star, Double or multiple star, Star in Cluster, Infra-Red source, Estrela binária, Variable Star, X-ray sourceO4009
HD 152314Star, Double or multiple star, Star in Cluster, Infra-Red source, Variable Star, X-ray sourceO4191
HD 15570Star, Star in Association, Star in Cluster, Emission-line Star, Infra-Red source, Variable StarO2104
HD 155889Star, Double or multiple star, Infra-Red source, UV-emission sourceO2718
HD 167971Star, Double or multiple star, Star in Cluster, Eclipsing binary of beta Lyr type (semi-detached), Emission-line Star, Infra-Red source, Supergigante azul, UV-emission source, Variable Star, X-ray sourceO2160
HD 168137Star, Star in Cluster, Infra-Red source, Estrela binária, X-ray sourceO1394
HD 171198Star, Infra-Red source, UV-emission sourceO1365
HD 17520Star, Double or multiple star, Star in Cluster, Emission-line Star, Infra-Red source, Variable StarO7766
HD 193443Star, Double or multiple star, Infra-Red source, UV-emission source, X-ray sourceO3546
HD 206183Star, Double or multiple star, Star in Cluster, Infra-Red source, Aglomerado estelar aberto, UV-emission sourceO2039
HD 215835Star, Double or multiple star, Star in Association, Star in Cluster, Ellipsoidal variable Star, Infra-Red source, Estrela binária, UV-emission source, Variable Star, X-ray sourceO5018
HD 216898Star, Star in Association, Association of Stars, Infra-Red source, UV-emission sourceO1930
HD 217086Star, Double or multiple star, Star in Association, Association of Stars, Infra-Red source, X-ray source, Objeto estelar jovem, Objeto estelar jovemO1424
HD 308813Star, Star in Cluster, Infra-Red sourceO5826
HD 308816Star, Star in Cluster, Infra-Red sourceO5827
HD 308818Star, Star in Cluster, Infra-Red sourceO5965
HD 312074Star, Star in Cluster, Infra-Red sourceO6478
HD 315023Star, Star in Cluster, Infra-Red sourceO4311
HD 75222Star, Infra-Red source, Supergigante azul, UV-emission sourceO2364
HD 8768Star, Double or multiple star, Star in ClusterO8583
HD 91983Star, Star in Cluster, Infra-Red sourceO7546
HD 99897Star, Região H II, Infra-Red sourceO1802
HERSCHEL 36Star, Double or multiple star, Star in Cluster, Infra-Red source, Estrela binária, Variable Star, Objeto estelar jovemO4500
HIP 101341Star, Double or multiple star, Star in Association, Star in Cluster, Eclipsing binary of beta Lyr type (semi-detached), Emission-line Star, Infra-Red source, Supergigante azul, Estrela binária, Variable Star, X-ray sourceO2146
HIP 102167Star, Infra-Red sourceO2363
HIP 11792Star, Star in Association, Star in Cluster, Infra-Red source, Objeto estelar jovemO1236
HIP 17113Star, Double or multiple star, Infra-Red sourceO635
HIP 172Star, Star in Cluster, Infra-Red sourceO2861
HIP 18175Star, Infra-Red sourceO968
HIP 23527Star, Infra-Red sourceO813
HIP 26889Star, Infra-Red source, Estrela bináriaO965
HIP 28711Star, Infra-Red sourceO355
HIP 29216Star, Infra-Red source, UV-emission source, X-ray sourceO994
HIP 40430Star, Infra-Red source, Nova-like Star, Nova, High proper-motion Star, Estrela binária, UV-emission source, Variable Star, X-ray sourceO315
HIP 82691Star, Double or multiple star, Star in Cluster, Eclipsing binary of beta Lyr type (semi-detached), Emission-line Star, Infra-Red source, Supergigante azul, Estrela binária, Variable Star, X-ray sourceO4056
HIP 89743Star, Star in Cluster, Infra-Red source, X-ray sourceO1371
HR 6272Star, Double or multiple star, Star in Cluster, Emission-line Star, Infra-Red source, Supergigante azul, UV-emission source, Variable Star, Estrela Wolf-RayetO2265
HR 7767Star, Double or multiple star, Infra-Red source, UV-emission source, X-ray sourceO1941
HR 8281Star, Double or multiple star, Star in Cluster, Emission-line Star, Infra-Red source, Aglomerado estelar aberto, Estrela binária, UV-emission source, X-ray sourceO1977
IRAS 21565-3937Galaxy, Infra-Red source, Nebulosa planetáriaO3000
lam01 OrionisStar, Double or multiple star, Emission-line Star, Infra-Red source, UV-emission source, X-ray sourceO1440
MenkibStar, Double or multiple star, Star in Cluster, Emission-line Star, Infra-Red source, UV-emission source, Variable Star, X-ray sourceO1245
QZ CarinaeStar, Double or multiple star, Star in Cluster, Eclipsing binary of beta Lyr type (semi-detached), Infra-Red source, Estrela binária, UV-emission source, Variable Star, X-ray sourceO1953
TYC 3694-1331-1Star, Star in Association, Star in Cluster, Association of Stars, Be Star, Emission-line Star, Infra-Red sourceO7680
V1034 ScorpiiStar, Double or multiple star, Star in Cluster, Eclipsing binary of Algol type (detached), Estrela binária, Infra-Red source, Estrela binária, Variable Star, X-ray sourceO4157
V1292 ScorpiiStar, Star in Cluster, Eclipsing binary of Algol type (detached), Infra-Red source, Estrela binária, Variable Star, X-ray sourceO4102
X PerseiStar, Double or multiple star, Estrela Herbig Ae/Be, Be Star, Emission-line Star, Radiação gama, High Mass X-ray Binary, Infra-Red source, Confirmed Neutron Star, Pulsar, Estrela binária, UV-emission source, Variable Star, X-ray sourceO1394